Gnome121
Electrical
- Sep 13, 2004
- 2
General question regarding threaded holes in draft:
Assume a part with a face, and a pocket in that face, and a blind hole in that pocket... confusion !
Is the depth of the hole referenced to the topmost face or to the pocket face ?
I guess this makes a big difference wether the machinist first machines the pocket vs. the hole.
Or should I maybe place a datum frame and refer to that with a callout ?
Need to get this right so I don't get parts machines all wrong, how do I do this correctly ?
Assume a part with a face, and a pocket in that face, and a blind hole in that pocket... confusion !
Is the depth of the hole referenced to the topmost face or to the pocket face ?
I guess this makes a big difference wether the machinist first machines the pocket vs. the hole.
Or should I maybe place a datum frame and refer to that with a callout ?
Need to get this right so I don't get parts machines all wrong, how do I do this correctly ?